我正试图在我的照片库中加入一个图像模式。我一直在尝试使用此示例的一个版本:
http://www-db.deis.unibo.it/courses/tw/docs/w3schools/howto/howto_css_modal_images.asp.html
该示例仅适用于一个图像,因为它通过其id访问图像。我尝试对其进行修改,让它通过其类访问图像。但这不起作用。我必须如何修改js代码才能使其与图库中的任何图像一起工作?
非常感谢。
修改代码:
html:
<img class="galleryPic" src="assets/images/test images/globes.jpg" alt="Old globes" width="300" height="200">
<img class="galleryPic" src="assets/images/test images/palmtrees.jpg" alt="Palmtrees in front of the evening sky" width="300" height="200">
<!-- The Modal -->
<div id="myModal" class="modal">
<!-- The Close Button -->
<span class="close" onclick="document.getElementById('myModal').style.display='none'">×</span>
<!-- Modal Content (The Image) -->
<img class="modal-content" id="img01">
<!-- Modal Caption (Image Text) -->
<div id="caption"></div>
</div>
js:
// Get the modal
var modal = document.getElementById('myModal');
// Get the image and insert it inside the modal - use its "alt" text as a caption
var img = document.getElementsByClass('galleryPic');
var modalImg = document.getElementById("img01");
var captionText = document.getElementById("caption");
img.onclick = function(){
modal.style.display = "block";
modalImg.src = this.src;
modalImg.alt = this.alt;
captionText.innerHTML = this.alt;
}
// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];
// When the user clicks on <span> (x), close the modal
span.onclick = function() {
modal.style.display = "none";
}
1条答案
按热度按时间lndjwyie1#
世上没有这样的东西
document.getElementsByClass()
,有document.getElementsByClassName()
如果找到,则返回元素列表。因此,您需要在列表中进行“循环”: